Alert archive / Texas / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 587, NWS Norman, OK

September 27, 2007Hardeman County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Sep 27, 2007, 6:19 PM CDT for Hardeman County, Texas. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Sep 27, 2007, 6:19 PM CDT (23:19 UTC)
Expired: Sep 27, 2007, 7:00 PM CDT
In force: 41 min
Issued by: NWS Norman, OK
Area: Counties, with a storm outline in the text

County Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 71 km from the middle of the area, began a volume at 23:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Amarillo Airport, TX (KAMA), launched 12:00Z, 11.3 hours before the alert went out and 207 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 37 J/kg
Mixed-layer CIN: -402 J/kg
Mixed-layer LCL: 1853 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: 59 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 27, 3:11 PM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Sep 27, 3:11 PM CDT, 3 hours 8 minutes before

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Hazardous weather outlook, Sep 27, 12:00 PM CDT, 6 hours 19 minutes before

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In the hours before

Local storm report, Sep 27, 3:40 PM CDT, 2 hours 39 minutes before

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Special weather statement, Sep 27, 3:56 PM CDT, 2 hours 23 minutes before

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Special weather statement, Sep 27, 4:19 PM CDT, 2 hours before

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Special weather statement, Sep 27, 5:15 PM CDT, 1 hour 4 minutes before

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Special weather statement, Sep 27, 5:46 PM CDT, 33 minutes before

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Special weather statement, Sep 27, 6:05 PM CDT, 14 minutes before

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The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 26, 7:12 PM CDT	Severe Thunderstorm Warning	OUN	Roger Mills	48 min
Sep 26, 8:00 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	30 min
Sep 26, 8:20 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	25 min
Sep 26, 8:39 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	66 min
Sep 26, 9:37 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Kiowa, Washita	38 min
Sep 26, 9:40 PM CDT	Severe Thunderstorm Warning	OUN	Beckham	50 min
Sep 26, 10:12 PM CDT	Severe Thunderstorm Warning	OUN	Kiowa	33 min
Sep 26, 10:35 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa	25 min
Sep 26, 11:34 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Kiowa	26 min
Sep 27, 12:02 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Tillman	43 min
Sep 27, 5:12 AM CDT	Dense Fog Advisory	OUN	Alfalfa, Atoka, Blaine, Bryan, Canadian, Carter and 24 more	5 hr
Sep 27, 6:57 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.